[SOLVED] P1135 Code: Fix Air/Fuel Ratio Sensor Heater Circuit Malfunction

If you’ve noticed the Engine Light ON or the Service Engine Soon Warning Light in your car, it’s important to pay attention to the fault code P1135. This code indicates a problem with the Air-Fuel Ratio (AF) Sensor Bank 1 Sensor 1.

The possible causes could be a faulty sensor, an open or shorted harness, a poor electrical connection in the circuit, or even a faulty Engine Control Module (ECM). To fix this issue, start by visually inspecting the wiring harness and connectors.

Look for any damaged components or broken, bent, pushed out, or corroded connector pins. This repair is of moderate difficulty and should take around 1.0 hour to complete.

Don’t ignore this fault code as it can affect your car’s performance and fuel efficiency.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level6.67 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1135 fault code.

  • The symptoms of the automobile fault code P1135 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code P1135 can be caused by a faulty AF sensor, open or shorted sensor harness, poor electrical connection, or a faulty ECM.

  • The fault code P1135 can be caused by the following: a faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1, an open or shorted harness for the Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1, a poor electrical connection in the circuit of the Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1, or a faulty Engine Control Module (ECM).

To fix the p1135 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code P1135, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.
  • This fix typically takes around 1.0 hour to complete.

The automobile fault code P1135 diagnosis and fixing cost is influenced by the estimated repair time of 1.0 hour. Most auto repair shops charge between $75 and $150 per hour for their services.

The P1135 fault code indicates a malfunction in the airfuel ratio sensor heater circuit for Bank 1. This sensor needs to reach a minimum operating temperature of 1200 degrees F to provide an accurate voltage signal to the Engine Control Module (ECM). The ECM controls the heater element inside the sensor, which helps it reach the required temperature faster.

The ECM monitors the voltage signal from the heater circuit and compares it to factory specifications to determine if there is a problem.

What are the possible causes of fault code P1135 in an automobile?

If you’re seeing the engine light on or the service engine soon warning light in your automobile, it could be due to fault code P1135. This code is typically caused by a faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1, an open or shorted harness for the sensor, a poor electrical connection in the sensor circuit, or a faulty Engine Control Module (ECM). To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or broken pins.

How can I visually inspect the wiring harness and connectors to fix fault code P1135?

If you’re dealing with fault code P1135 and your engine light is on, it’s time to take action. The cause could be a faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1, an open or shorted harness, a poor electrical connection in the circuit, or even a faulty Engine Control Module (ECM). To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any signs of damage, such as broken or bent pins, corrosion, or components that are out of place. Don’t delay – check these possible causes and get your engine back in top shape.

What should I look for when checking for damaged components and connector pins to resolve fault code P1135?

If you’re dealing with fault code P1135 and your engine light is on, there are a few things you should check. The most common cause is a faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1. However, it’s also worth inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. Taking these steps can help you identify and resolve the issue.

p1135 error fault code explained

If your engine light is on and you’re seeing the P1135 fault code, it could be due to a faulty Air-Fuel Ratio (AF) Sensor Bank 1 Sensor 1 or issues with the sensor’s wiring harness and electrical connection. To fix it, visually inspect the wiring harness and connectors for any damage, and check for broken or corroded pins.

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